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A. L. F. MITCHELL. HEEL" BURNISHING' MAGHIN.

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UNITED STATES PATENT OFFICE..

ALBION L. F. MITCHELL, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE MITCHELLHEEL AND EDGE BURNISHING COMPANY, OF KITTERY, ME.

HEEL-BURNISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 312,573, dated February17, 1885.

Application led December 30, 1854.

To a/ZZ whom, it may concern: y

Be it known that I, ALBION L. F. MITCH- ELL, of Lynn, in the county ofEssex and vState of Massachusetts, have invented certain Improvements inHeel-Burnishing Machines, of which the following is a specification.

This invention, which is an improvement on that shown in my PatentNo.310,532, of January 6, 1885, has for its object to provide a jackadapted both to oscillate a boot or shoe held by it while the heel ofsaid boot or shoe is presented to a burnishing-tool, and also toautomatically move the heel so as to present different Vportions of itsedge successively to the burnishing-tool until the entire surface isburnished.

The invention also has for its object t0 provide a locking device ordetent whereby the jack may be held away from the burnishingtool.

To these ends the invention consists in the several improvementshereinafter described and claimed.

Of the accompanying drawings, forming a part of this specification,Figure l represents a front elevation of a jack embodying` my inventionapplied to a burnishingmachine. Fig. 2 represents an end elevation ofthe same. Fig. 3 represents a section on line w x, Fig. l. Figs. 4 and 5represent .a niodication. Figs. 6 and 7 represent detail views.

The same letters of reference indicate the saine parts in all the gures.

In the drawings, a represents the standard which supports the arbor of arotary burnishing-wheel, b, formed to burnish a boot or shoe heel.

To the standard a is rigidly attached a stout arm, c, and to the outerend of this arm is connected by a pivot-bolt, d, a yoke or bearing, e,adapted to oscillate freely on the pivot d. An arbor, f, is journaled inthe yoke or bearing c, and on said arbor is mounted the supporting-frameg of the jack, said frame having bearings 7L h, through which the arborpasses. The frame can therefore oscillate in two directions-viz., withthe yoke e and arbor f on the pivot d, and independently of said yoke onthe arbor f, at right angles to the (No model.)

direction in which it is capable of oscillating 5o on said pivot.

The boot or shoe is clamped between the rocking arbor t' and rod Zin themanner described in my above-named application, said arbor and rod beingjournaled in bearings in the upper end of the frame g and rocked withthe boot or shoe by means of a pinion, h', on a sleeve rigidly attachedto the arbor t', and a rack-segment, i', on the upper end of the leverj', which is oscillated by an eccentric wrist-pin, m', on a disk on thearbor f, said pin entering a slot in the lower end of the lever j. Thearbor t and rod Z are so located with reference to the burnishing-wheelb that the heel held between their ends may bear against said wheel. Theoscillations of the frame g on the arbor f enable the heel to movetoward and from `the burnishingwheel and enable the frame g to m'ove asrequired when the heel is rotating and is in contact with the wheel. Theoscillations of the frame g and the yoke or bearing e on the pivot denable the heel to be moved across the perimeter of the wheel, so thatall portions of the heel-edge may be presented to the burnishing portionof the wheel, as described in my former application. The frame g isconnected to the standard by the sliding telescopic connection shown inmy former applicationviz., a socket, w, fitted to slide on a curvedguide-rod, u, rigidly attached to the standard, and a curved rod, c',secured to the frame y and sliding into and out of the socket w. Aspring, f', secured at one end to the sliding socket w and at the otherend to the standard c, pulls the frame toward the burnishingwheel, as inmy former application.

In carrying out my present inventioninstead of leaving the frame g freeto be oscillated toward and from the standard a on the pivot d by theoperator, I provide means whereby said frame is oscillated automaticallyto a sufficient extent to present all parts of the heel.- edge to theburnishing-tool. Said means consist of an arbor, A, journaled in theframe g,

and having at one end a disk, B, and at the other end a worm-wheel, C, aconnecting-rod,

D, eccentrically pivoted at one end to the disk B, and pivoted at theother end to the socket w, an arbor, E, journaled in bearings on theframe g, and arranged at right angles to the arbor A, and a worm, F, onsaid arbor meshing with the wormfwheel C. The arbor Eis provided with aseries of pulleys, H, of different diameters, one of which isconnectedby a belt, J, to one of a similar series of pulleys, I, on the arbor f.The rotation thus imparted to the arbor E is communicated by the worm Fand worm-wheel Gto the arbor A, and the eccentric wrist-pin L is thuscaused to act on the connectingrod D, so as to oscillate the frame gtoward and from the standard a, thus causing the heel to move across thetool l in the manner required to present all parts of its edge to thetool b. 'lhe length of the oscillating movements thus imparted to theframe g may be varied by adjusting the wrist-pin toward or from thecenter of the disk B, a slot being provided in the disk in which theWristpinis adjustable. The movements of the jack may thus be made toconform to the height of the heel. The connecting-rod D is composed oftwo sections, 2 3, the (gne having a right and the other a left handscrew-thread, and a nut, 4, tapped to receive said sections. By turningthe nut, the con necting-rod may be lengthcned or shortened,to adj ustthe frame g toward and from the standard a, and thus determine thedistance of the frame from the standard at the tWo extremes of theautomatic oscillating movement.

The rapidity of the oscillating movements may be varied by means of thedifferent-sized pulleys H and I. Y J

It will be seen that the described automatic oscillation of the jackrelieves the operator from all labor excepting the act of applying andremoving the boot or shoe, the presentation of the heel to the toolbeing entirely automatic.

The'opera-tion of the jack may be stopped when any part of the heel-edgeis presented to the burnishing-tool, and the same part of the nextheel-edge applied will be first presented to the tool, so that theburnishing action will commence at said point and progress from itacross the heel-edge and back.

The base or sleeve w of the socket w, that slides on the rod u, isprovided with a spring catch or dog, l?, that engages automatically witha notch cut in the rod u (seeFig. 5) when the frame g is moved away fromthe burnishing-tool, and thus holds the frame while the operator isremoving and applying the work.

The socket w may be formed in one piece with the sleeve w', as shown inFig. 3, or may be in a separate piece, pivoted thereto at av', as shownin Fig. 4, and as shown in section in Fig. 5.

. I claimm l 1. The combination, with the burnishingtool, of the jackpivoted to swing universally, as described, and provided withoscillatory `heelclamping devices, substantially as described,mechanism, substantially as described, whereby said clamping devices maybe oscillated while the heel held thereby is being presented to theburnishing-tool, and mechanism, substantially as described, whereby thejack is automatically oscillated to present different portions of theheel-edge to the burnishing-tool, as set forth.

2. In a heel-burnishing machine, the combination of asupporting-standard, a burnishing-tool mounted thereon, a frame pivotedto said standard to swing universally,heel-clamp ing devices,substantially as described, mounted in theswinging end of said frame,.mechanism, substantially as described, whereby said heel-clampingdevices are oscillated, and mechanism, substantially as described,whereby the frame is oscillated automatically to present different portionsof the heel-edge to the burnishing-tool, as set forth.

3. The jack composed of the yoke or bearing e, pivoted to a fixedsupport to swing in a given plane, the frame g, pivoted to the yoke toswing in a plane at right angles to that in which the yoke swings,heelclamping devices, substantially as described, mounted on theswinging end of said frame, and m'echanism, substantially as described,whereby said heelclamping devices are oscillated, combined withmechanism, substantially as described,where by the frame is oscillatedautomatically, as set forth.

4. The combination of a supporting-standard, a burnishing tool mountedthereon, a frame, g, pivoted to said standard to swing universally,heel-clamping devices, substantially as described, mounted in theswinging end of said frame, mechanism, substantially as described,whereby said heel-clamping devices are oscillated, the socket w, mountedto slide on a guide on the supporting-standard, the rotating arbor A,journaled inthe frame g, and the connecting-rod D, connected to thesocket w and to a disk on the arborA, as set forth.

5. The combination of the standard a, having the guide-rod u, thesliding'socket on said rod, the swinging frame g,having the rotatingarbor A, and the connecting-rod D, connected 4at one end to the slidingsocket, and adjust-ably connected at the other end to a disk on thearbor A, as set forth.

6. The combination of the frame g, the sliding sleeve w, the rotatingarbor A, and the connecting-rod adjustable as to the length, asset'forth. .-aw.

7. The combination of the standard a, having the guide -rod il, theframe g, having the arbor A, the connecting-rod D, connecting saidvarbor to a sliding sleeve on said guide-rod, the arbor E on said frame,connected, as described, to the arbor A, and provided with a series ofpulleys, H, the arbor f, havingthe series of pulleys I, and aconnecting-belt, J, as set forth.

8. The combination of the standard having the'burnishing-tool and theguide-rod, the jack ICO IIO

pivoted to swing in two directions, as del In testimony whereof I havesigned my name scribed, the telescopic connection mounted to to thisspecificatiomin the presence of two sub- Io slide on the guide rod, andthe spring f', scribing Witnesses, this 26th day of December, wherebythe jack is pulled toward the burnish- 1884..

ing-tool, the spring-dog on the telescopio con- ALBION L. F. MITCHELL.nection, and a notch in the guide-rod,whe1eby Witnesses:

H. BROWN.

the jack may be heid away from the burnish-.i C. F. BROWN, ing-tool, asset forth.

